Homebrew PCBs

Stefan, thanks for the suggestion. Do you soak with acetone and then 
rub with hte edge of PCB? Or just start with the edge of PCB? Is 
there a need for aceton in the end? I hate it equally as you do.

I may have read about that ultrasonic cleaning from you then.  Mike

--- In Homebrew_PCBs@yahoogroups.com, Stefan Trethan 
<stefan_trethan@g...> wrote:
> On Fri, 30 Jul 2004 19:05:42 -0000, mikezcnc <eemikez@c...> wrote:
> 
> > Steve,
> >
> > It is a nice addition to the discussion. I personally don't need 
to
> > use IPA anymore. What I need to use is acetone to dissolve the 
melted
> > toner. I noticed that it helps if I leave the toner soaked in 
acetone
> > and then rub it off, otherwise it is very hard to remove it just 
by
> > rubbing it with paper towel. I am afraid that acetone is here to 
stay
> > for the removal of hardened toner because any stronger chemical 
like
> > Xylene is even worse to be around. I wonder what does ultrasonic
> > cleaner do the hardened toner?
> >
> > Mike
> >
> 
> Mike, i have something you might like:
> Use another board and scrape the toner off witht the edge.
> I do it all the time and it works very well, no damage even to the 
> thinnest trace.
> 
> I mentioned the ultrasonic cleaner a while ago, and asked for 
someone
> having one to try and see if the toner is affected. My idea was to 
use
> the micro-cavitation action to speed up the etching itself. For this
> it should of course not attack the toner.
> I'd REALLY like to hear of someone placing a board with toner in 
the 
> ultrasonic
> cleaner.
> 
> ST
> 
> (P.S. xylene/tulene laquer thinner works very well, without 
attaching the 
> eopxy,
> but it is very nasty indeed)